[CS] Intro to OS

core/cs/parts/00_os/00_intro.tex

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+\subsection{Introduction}
+This course uses the xv6 operating system, developed at MIT, for teaching how operating systems work.
+This is a cleaned up, simplified version of UNIX v6. Since it is a very simple, yet (basic) feature-complete operating system,
+reading its source code is much more straight forward than reading say Linux's source code, which at the time of writing is approximately 40 million lines of code.
+
+You can find the entire source code of the operating system \hlurl{https://github.com}{here} % TODO: Input link here

core/cs/parts/00_os/01_bootstrapping.tex

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+\subsection{Bootstrapping}
+Bootstrapping is the first operation any operating system performs.
+This typically involves setting up the stack in assembly for the respective language, then intializing devices, etc. in a higher level language, such as \texttt{C} or \texttt{Rust}.
+
+Contrary to popular believe, setting up the stack can be achieved in just a few instructions and the rest is mostly ``box-standard'' \texttt{C} code.
+Of course, you still have to read lots of manuals to figure out how each device needs to be initialized.
+At this point, you also set up Virtual Memory and all the memory structures needed to operate.

core/cs/parts/main.tex

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+\section{Operating Systems}
+\input{parts/00_os/00_intro.tex}